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RNA-primed RTase

Order: Retrovirales (Ortervirales)
(tRNA primer, RTase, RNAse H)

LTR Retrotransposons
(RNA primer, RTase, RNAse H)
  • Belpaoviridae
    • image image image Semotivirus
  • Metaviridae
    • image image image Metavirus
    • image image image Errantivirus
  • Pseudoviridae
    • image image image Hemivirus
    • image image image Pseudovirus
    • image image image Sirevirus
Protein-primed RTase
Order: Retrovirales (Ortervirales)
(protein primer, RTase, RNAse H)
Order: Blubervirales
(protein primer, RTase, RNAse H)

DNA-primed RTase (DNA primer, RTase)
Elements not classified as viruses
  • LINE-1: Long interspersed nuclear elements-1
      • imageimageimageimageimage L1 type
  • (LINE-2: Long interspersed nuclear elements-1)*
  • (LINE-3: Long interspersed nuclear elements-1)*
  • SINE-1: Short interspersed nuclear elements-1**
      • imageimageAlu, B1 types
      • imageimageB2 types

    * Genomic fossils
    ** Presumably of cellular origin
Guanosine-2'-primed RTase (G-2'OH primer, RTase)
Elements not classified as viruses
    Unclassified: Retrons
  • imageimage prokaryotic retrons

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